Uploaded image for project: 'Core ReactOS'
  1. Core ReactOS
  2. CORE-15906

Clover.exe: CombineRgn seems to not create a clipping region correctly

    XMLWordPrintable

Details

    • Bug
    • Resolution: Unresolved
    • Major
    • None
    • None

    Description

      Clover.exe: Testcase and C code attached from Petzold's cd examples.
      Code is as simpler as possible:

      • CombineRgn which combines CreateRectRgn and CreateEllipticRgn
      • After combining, rays are traced starting from middle of the window outwards clipped by such region
        Picture1.jpg compares ReactOS vs Windows testcase.
        Some hints:
        Picture2.jpg shows what happens when the Clover.exe window is resized. As you resize the window, making it smaller, you can see how it starts to look similar to Windows expected behavior. Clipping region as the width and height changes seems to be miscalculated.
        Tested in 1001-g0c4d21a iso

      https://www.codeproject.com/Articles/2095/A-Guide-to-WIN32-Clipping-Regions

      Attachments

        1. Picture1.jpg
          Picture1.jpg
          636 kB
        2. Picture2.jpg
          Picture2.jpg
          258 kB
        3. Clover.c
          4 kB
        4. Clover.exe
          176 kB
        5. region_1.patch
          5 kB
        6. region.patch
          18 kB
        7. snapshot145.png
          snapshot145.png
          60 kB
        8. snapshot146.png
          snapshot146.png
          61 kB
        9. Clover_New_Clipper.exe
          48 kB
        10. clover frankie.webm
          1.72 MB
        11. image-2024-05-19-17-21-31-460.png
          image-2024-05-19-17-21-31-460.png
          8 kB

        Issue Links

          blocks

          Bug - A problem which impairs or prevents the functions of the product. CORE-7153 METABUG: Petzold's Testcases

          • Major - Major loss of function.
          • Open
          relates to

          Bug - A problem which impairs or prevents the functions of the product. CORE-16626 Regression, MediaPlayer Classic MPC HC 1.7.13, part of the GUI is not drawn at all, is transparent

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. CORE-16680 Regression: our Solitaire and Spider Solitaire have a transparent background with VBox Guest Additions installed

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. CORE-6897 SetWindowRgn doesn't work

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Activity

            People

              bug zilla Bug Zilla
              vicmarcal vicmarcal
              Votes:
              4 Vote for this issue
              Watchers:
              6 Start watching this issue

              Dates

                Created:
                Updated: